Abstract
The calcium mercaptosuccinate (Ca-MS) functionalized poly(ε-caprolactone) (PCL) was successfully synthesized by ring-opening polymerization (ROP) method at 160 °C for 2 h under nitrogen atmosphere with mild stirring in the presence of stannous octoate (SO) as ROP catalyst. The synthesized Ca-MS functionalized PCL was characterized by FTIR spectroscopy, NMR spectroscopy, atomic force microscopy, HRTEM and polarized optical microscopy (POM) like analytical techniques. The microstructure of Ca-MS nucleated PCL crystals was analysed by POM. The thermal properties of Ca-MS functionalized PCL were examined using differential scanning calorimetry and thermogravimetric analysis techniques. The non-isothermal crystallization and degradation kinetic studies were carried out to assess the crystallinity as well as the energy of activation (Ea) of Ca-MS functionalized PCL. The FTIR spectrum showed a peak at 1720 cm−1 corresponding to the carbonyl stretching of PCL. The 1H-NMR spectrum showed an alkoxy proton signal at 4.1 ppm. The non-isothermal crystallization kinetic study showed the 3D crystal growth with the Ea value of 142.4 kJ/mol.
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Mahalakshmi, S., Alagesan, T., Parthasarathy, V. et al. Thermal degradation and crystallization kinetics studies on synthesized calcium mercaptosuccinate end-capped poly(ε-caprolactone) nanocomposite. Polym. Bull. 76, 4991–5009 (2019). https://doi.org/10.1007/s00289-018-2614-5
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DOI: https://doi.org/10.1007/s00289-018-2614-5